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Finding the Fourth Proportional to 218,499.80, 306,521.80 and 218,499.80

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Solution

The fourth proportional to 218,499.80, 306,521.80 and 218,499.80 is: 306,521.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,499.80 : 306,521.80 = 218,499.80 : x
  2. Step 2: Convert to fraction form
    218,499.80/306,521.80 = 218,499.80/x
  3. Step 3: Cross multiply
    218,499.80x = 306,521.80 × 218,499.80
  4. Step 4: Simplify right side
    218,499.80x = 66,974,951,995.64
  5. Step 5: Solve for x
    x = 66,974,951,995.64/218,499.80
  6. Step 6: Final answer
    x = 306,521.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.